Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #include "src/compiler/all-nodes.h" |
| 6 | |
| 7 | #include "src/compiler/graph.h" |
| 8 | |
| 9 | namespace v8 { |
| 10 | namespace internal { |
| 11 | namespace compiler { |
| 12 | |
| 13 | AllNodes::AllNodes(Zone* local_zone, const Graph* graph) |
| 14 | : live(local_zone), is_live(graph->NodeCount(), false, local_zone) { |
| 15 | Node* end = graph->end(); |
| 16 | is_live[end->id()] = true; |
| 17 | live.push_back(end); |
| 18 | // Find all live nodes reachable from end. |
| 19 | for (size_t i = 0; i < live.size(); i++) { |
| 20 | for (Node* const input : live[i]->inputs()) { |
| 21 | if (input == nullptr) { |
| 22 | // TODO(titzer): print a warning. |
| 23 | continue; |
| 24 | } |
| 25 | if (input->id() >= graph->NodeCount()) { |
| 26 | // TODO(titzer): print a warning. |
| 27 | continue; |
| 28 | } |
| 29 | if (!is_live[input->id()]) { |
| 30 | is_live[input->id()] = true; |
| 31 | live.push_back(input); |
| 32 | } |
| 33 | } |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | } // namespace compiler |
| 38 | } // namespace internal |
| 39 | } // namespace v8 |